# AI tools for “PDF assistant” 405 matching tools; showing 24, ranked by relevance. Filters: `group=coding-development` Related categories: [ai-pdf](https://openaitools.app/category/ai-pdf.md), [ai-assistant](https://openaitools.app/category/ai-assistant.md) | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [ChatPDF](https://openaitools.app/tool/chatpdf) | 1,044,477 | -3.7% | Freemium | Chat with any PDF, video, or website and get cited answers in seconds | category: ai-pdf, ai-assistant; keywords 100%; semantic match | [.md](https://openaitools.app/tool/chatpdf.md) | | 2 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | category: ai-pdf, ai-assistant; keywords 100%; semantic match | [.md](https://openaitools.app/tool/sider.md) | | 3 | [PDF.ai](https://openaitools.app/tool/pdf-ai) | 387,819 | -5.5% | Freemium, Free Trial | Chat with any PDF and get cited answers instantly | category: ai-pdf; keywords 77%; semantic match | [.md](https://openaitools.app/tool/pdf-ai.md) | | 4 | [LightPDF](https://openaitools.app/tool/lightpdf-com) | 1,742,568 | -15.3% | Freemium | Free AI-powered PDF editor, converter and reader for every device | category: ai-pdf; keywords 77%; semantic match | [.md](https://openaitools.app/tool/lightpdf-com.md) | | 5 | [TheToolBus](https://openaitools.app/tool/thetoolbus-ai) | 154,850 | +19.2% | Free, Paid | 162+ free browser-based tools for PDFs, images, text, and quick conversions | category: ai-pdf; keywords 100%; semantic match | [.md](https://openaitools.app/tool/thetoolbus-ai.md) | | 6 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | category: ai-assistant | [.md](https://openaitools.app/tool/claude-2.md) | | 7 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | category: ai-assistant; keywords 100% | [.md](https://openaitools.app/tool/merlin-ai-plugins.md) | | 8 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | category: ai-assistant | [.md](https://openaitools.app/tool/chatgpt-4.md) | | 9 | [PDF.co](https://openaitools.app/tool/pdf-co) | 78,590 | -8.2% | Free Trial, Paid | REST API to convert, edit and extract data from PDFs | category: ai-pdf; keywords 77%; semantic match | [.md](https://openaitools.app/tool/pdf-co.md) | | 10 | [DeepSeek](https://openaitools.app/tool/deepseek) | 372,761,591 | +4.3% | Freemium | High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs. | category: ai-assistant | [.md](https://openaitools.app/tool/deepseek.md) | | 11 | [Doc2X](https://openaitools.app/tool/doc2x) | 69,306 | +20.8% | Free Trial, Paid | Turn any PDF into editable, translatable, searchable knowledge | category: ai-pdf; keywords 77%; semantic match | [.md](https://openaitools.app/tool/doc2x.md) | | 12 | [BLUF](https://openaitools.app/tool/bluf) | 3,952 | -25.3% | Freemium | Bottom Line Up Front for every page, PDF and video you read | category: ai-assistant; keywords 100%; semantic match | [.md](https://openaitools.app/tool/bluf.md) | | 13 | [Dropbox Sign (HelloSign)](https://openaitools.app/tool/hellosign) | 4,339,818 | -2.2% | Free Trial, Paid, Contact for Pricing | Electronic signatures and agreement workflows built into Dropbox | category: ai-pdf; keywords 77% | [.md](https://openaitools.app/tool/hellosign.md) | | 14 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Summarize, bookmark and write with AI right in your browser | category: ai-pdf, ai-assistant; keywords 100% | [.md](https://openaitools.app/tool/kome-ai.md) | | 15 | [Aymo AI](https://openaitools.app/tool/aymo-ai) | 268,974 | +113.3% | Freemium | Every leading AI model in one secure team workspace | category: ai-assistant; keywords 100% | [.md](https://openaitools.app/tool/aymo-ai.md) | | 16 | [OpenL Translate](https://openaitools.app/tool/openl) | 1,470,643 | +8.8% | Freemium, Subscription | AI translation for text, images, documents and speech in 100+ languages | category: ai-pdf; keywords 77% | [.md](https://openaitools.app/tool/openl.md) | | 17 | [ZykaAI](https://openaitools.app/tool/zykaai) | 316,943 | +6.9% | Freemium, Free Trial, Paid | Every AI model. One creative studio. | category: ai-pdf, ai-assistant; keywords 100% | [.md](https://openaitools.app/tool/zykaai.md) | | 18 | [Thomson Reuters](https://openaitools.app/tool/thomson-reuters) | 17,919,413 | +5.5% | Contact for Pricing | Purpose-built AI and trusted content for legal, tax, risk and trade professionals | category: ai-assistant | [.md](https://openaitools.app/tool/thomson-reuters.md) | | 19 | [Qwen 4 (Alibaba Qwen4)](https://openaitools.app/tool/qwen-4) | 35,101,353 | -6.2% | Freemium | Alibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context. | category: ai-assistant | [.md](https://openaitools.app/tool/qwen-4.md) | | 20 | [BoltAI](https://openaitools.app/tool/boltai-com) | 51,681 | -8.2% | One-time purchase (perpetual licence with 1 year of updates) | One native Mac workspace for hundreds of AI models | category: ai-assistant; keywords 100% | [.md](https://openaitools.app/tool/boltai-com.md) | | 21 | [Mirai Translate](https://openaitools.app/tool/miraitranslate-com) | 167,767 | -20.5% | Free Trial, Contact for Pricing | Secure, high-accuracy AI machine translation for global organisations | category: ai-pdf; keywords 100% | [.md](https://openaitools.app/tool/miraitranslate-com.md) | | 22 | [LlamaIndex](https://openaitools.app/tool/llamaindex) | 387,910 | +19.9% | Freemium, Contact for Pricing | Turn any document into AI-ready context with agentic parsing and extraction | category: ai-assistant; keywords 100% | [.md](https://openaitools.app/tool/llamaindex.md) | | 23 | [Z.ai](https://openaitools.app/tool/z-ai) | 9,176,366 | -8.4% | Free | Free GLM-powered assistant that turns prompts into slides, sites and code | category: ai-assistant | [.md](https://openaitools.app/tool/z-ai.md) | | 24 | [Codia AI](https://openaitools.app/tool/codia-ai) | 398,220 | -2.8% | Freemium, Contact for Pricing | Turn flat screenshots, PDFs and slides back into editable designs and code | category: ai-pdf; keywords 77% | [.md](https://openaitools.app/tool/codia-ai.md) | Page 1 of 17 · [Next page →](https://openaitools.app/index.md?q=PDF+assistant&group=coding-development&page=2) For programmatic access use `https://openaitools.app/api/tools?q=…` or MCP `https://openaitools.app/api/mcp`. --- Source: https://openaitools.app/?q=PDF%20assistant More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)